<!DOCTYPE html>
<html lang="en">
<head>
    <!--定义一个区块-->
    {{block "head" .}}{{end}}
</head>
<body>
    <!--定义一个区块-->
    {{block "header" .}}{{end}}
    <!--定义一个区块-->
    {{block "body" .}}{{end}}
    <!--定义一个区块-->
    {{block "footer" .}}{{end}}
</body>
</html>